IMAGE DISPLAY DEVICE

An image display device includes a panel in a curved surface shape that lets through and reflects light, a first display unit that displays a first image based on first image data that reaches a predetermined position through the panel, a second display unit that displays a second image based on second image data that is reflected by the panel and reaches the predetermined position, a position information acquisition unit that acquires position information indicating a position of an actual viewpoint of an observer, and an image processing unit that determines a scaling factor of the second image data for each scan line based on the position information and performs a scaling process for each scan line on the second image data to be inputted to the second display unit.